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Living with Acquired factor VIII deficiency disease

A bleeding disorder, also called acquired hemophilia A, in which the immune system attacks a blood clotting protein.

Understanding Acquired factor VIII deficiency disease

Acquired factor VIII deficiency disease, also called acquired hemophilia A, is a bleeding disorder that affects blood clotting.

Signs include prolonged bleeding, frequent nosebleeds, bruising, hematomas (solid swellings of clotted blood), blood in the urine, and bleeding in the digestive or urinary tract. It happens when the immune system attacks coagulation factor VIII. About half of cases are linked to other conditions such as pregnancy, autoimmune disease, cancer, skin diseases, or reactions to medicines. GARD lists onset as a variety of ages.

Signs & symptoms

GARD doesn't list a symptom list for this condition yet. The summary describes these features:

  • Prolonged bleeding
  • Frequent nosebleeds
  • Bruising throughout the body
  • Hematomas (solid swellings of blood)
  • Blood in the urine
  • Digestive or urinary tract bleeding

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Bleeding Disorders Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What is causing my immune system to attack factor VIII?
What should I do if I have bleeding or large bruises?
Which specialist, such as a hematologist, should follow me?

Quick facts

Symptoms usually starta variety of ages

The immune system attacks and disables clotting factor VIII. About half of cases are linked to pregnancy, autoimmune disease, cancer, skin diseases, or reactions to medicines.

Blood

Also known as: acquired f8 deficiency; acquired factor viii deficiency; acquired hemophilia a; aha

Patient organizations

Source: NIH GARD · Acquired factor VIII deficiency diseaseGARD ID 6405 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Acquired factor VIII deficiency disease.

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Explore actively recruiting Acquired factor VIII deficiency disease studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Acquired factor VIII deficiency disease with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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